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When sending packets directly to the DHCP server, use a socket and send

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directly rather than bogusly sending it out as a link layer broadcast
(which fails to be received on some networks).

PR:		bin/96018
MFC after:	2 weeks
This commit is contained in:
Brooks Davis 2008-04-15 22:48:56 +00:00
parent 059c9e5c61
commit 8ca3089abc
1 changed files with 15 additions and 0 deletions
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15
sbin/dhclient/bpf.c
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@ -245,6 +245,21 @@ send_packet(struct interface_info *interface, struct dhcp_packet *raw,
unsigned char buf[256];
struct iovec iov[2];
int result, bufp = 0;
int sock;
if (to->sin_addr.s_addr != INADDR_BROADCAST) {
note("SENDING DIRECT");
/* We know who the server is, send the packet via
normal socket interface */
if ((sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) >= 0) {
result = sendto (sock, (char *)raw, len, 0,
(struct sockaddr *)to, sizeof *to);
close(sock);
if (result > 0)
return result;
}
}
/* Assemble the headers... */
assemble_hw_header(interface, buf, &bufp, hto);